ISSN:
1432-0649
Keywords:
42.80
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Pyroelectric detection of a CO2 laser beam has been investigated by using organic copolymers such as VDF/TrFE- and VDCN/VAc copolymers, and compared with that of PVDF polymer. The voltage responsitiviesR v are 40 mV/W for VDF/TrFE and 2 mV/W for VDCN/VAc at room temperature and at a chopping frequency of 200 Hz. (For comparison, the value of PVDF is 20 mV/W.) From the frequency dependence of the detected output, the electric time constant τE is evaluated to be about 6.4 ms and 2.6 ms for the former and latter copolymers with the detection area 3×3 mm2, respectively. Some theoretical discussion is also given of the responsivity, frequency dependence and temperature dependence obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00694422
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